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4.7
Infeed for the main circuit
4.7.1
Infeed options
You have the following options for implementing the infeed for the main circuit of the 3RM1
motor starter:
● Infeed via parallel wiring of individual 3RM1 motor starters
● Infeed via the 3RM19 infeed system (for 3RM1...-1AA.4 motor starters with screw
connections and 3RM1...-3AA.4 motor starters with hybrid connections)
● Infeed via the 3RM193 fuse module (for all 3RM1 motor starters)
4.7.2
3RM19 3-phase infeed system
The 3RM19 3-phase infeed system is designed for 3RM1...-1AA.4 motor starters with screw
connections and 3RM1...-3AA.4 motor starters with hybrid connections. Push-in terminals
can therefore not be connected with this infeed system.
Note
Use of several busbars
More than five devices can be connected by clamping the terminal lugs of a second busbar
rotated by 180°.
A motor starter must be plugged into the connection points of the busbars. Observe this in
the case of gaps stipulated for derating purposes, and select appropriate busbars.
The special 3-phase busbar enables fault-free and fast main circuit wiring when using
several 3RM1 motor starters arranged side-by-side. The energy is routed from an upstream
short-circuit protection device to the system via an infeed terminal. The 3-phase busbar is
designed in such a way that the maximum number of 3RM1 motor starters is only limited by
the rated operational current of the infeed system.
SIRIUS 3RM1 motor starter
Manual, 06/2016, A5E0345285095020A/RS-AE/005
Configuration
4.7 Infeed for the main circuit
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